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@ARTICLE{Rogister:32986,
      author       = {Rogister, A.},
      title        = {{L}ow frequency instabilities in confined plasmas, concepts
                      and theoretical framework},
      journal      = {Fusion science and technology},
      volume       = {45},
      issn         = {1536-1055},
      address      = {La Grange Park, Ill.},
      publisher    = {American Nuclear Society},
      reportid     = {PreJuSER-32986},
      pages        = {338 - 345},
      year         = {2004},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Most experts consider that anomalous energy and particle
                      transport in fusion devices are due to low frequency waves
                      whose free energy sources are the equilibrium gradients and
                      the associated drifts across the confining magnetic field
                      (drift waves). We consider successively the cases where
                      $k(\\)qR$ much greater than 1 and $k(\\)qR$ similar to 1
                      where $k(\\)$ is the parallel wave number, qR being the
                      connection length. The first limit is particularly adequate
                      if the gradient of the parallel flow velocity is
                      significant; exact stability criteria are then obtained with
                      the help of the Nyquist diagram in the framework of the
                      local dispersion relation which applies. That is not the
                      case if $k(\\)qR$ similar to 1 : here, the stability
                      analysis leads to second order differential equations whose
                      complex eigenvalues provide the wave frequencies and the
                      growth/decay rates. The theoretical concepts are developed
                      successively for cylindrical and axi-symmetric toroidal
                      geometries. Electrons are considered to be adiabatic.},
      keywords     = {J (WoSType)},
      cin          = {IPP},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB181},
      pnm          = {Kernfusion und Plasmaforschung},
      pid          = {G:(DE-Juel1)FUEK250},
      shelfmark    = {Nuclear Science $\&$ Technology},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000220595000038},
      url          = {https://juser.fz-juelich.de/record/32986},
}